6RJP

Bfl-1 in complex with alpha helical peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.57 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.203 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

N-locking stabilization of covalent helical peptides: Application to Bfl-1 antagonists.

Baggio, C.Udompholkul, P.Gambini, L.Jossart, J.Salem, A.F.Hakansson, M.Perry, J.J.P.Pellecchia, M.

(2020) Chem Biol Drug Des 95: 412-426

  • DOI: 10.1111/cbdd.13661
  • Primary Citation of Related Structures:  
    6RJP

  • PubMed Abstract: 
  • Recently, it was reported that tetrapeptides cyclized via lactam bond between the amino terminus and a glutamic residue in position 4 (termed here N-lock) can nucleate helix formation in longer peptides. We applied such strategy to derive N-locked covalent BH3 peptides that were designed to selectively target the anti-apoptotic protein Bfl-1 ...

    Recently, it was reported that tetrapeptides cyclized via lactam bond between the amino terminus and a glutamic residue in position 4 (termed here N-lock) can nucleate helix formation in longer peptides. We applied such strategy to derive N-locked covalent BH3 peptides that were designed to selectively target the anti-apoptotic protein Bfl-1. The resulting agents were soluble in aqueous buffer and displayed a remarkable (low nanomolar) affinity for Bfl-1 and cellular activity. The crystal structure of the complex between such N-locked covalent peptide and Bfl-1 provided insights on the geometry of the N-locking strategy and of the covalent bond between the agent and Bfl-1.


    Organizational Affiliation

    Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Bcl-2-related protein A1A, B171Homo sapiensMutation(s): 0 
Gene Names: BCL2A1BCL2L5BFL1GRSHBPA1
Find proteins for Q16548 (Homo sapiens)
Explore Q16548 
Go to UniProtKB:  Q16548
NIH Common Fund Data Resources
PHAROS:  Q16548
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Bcl-2-like protein 11C, D17Homo sapiensMutation(s): 1 
Gene Names: BCL2L11BIM
Find proteins for O43521 (Homo sapiens)
Explore O43521 
Go to UniProtKB:  O43521
NIH Common Fund Data Resources
PHAROS:  O43521
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
AIB
Query on AIB
C, DL-PEPTIDE LINKINGC4 H9 N O2ALA
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.57 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.203 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 113.749α = 90
b = 113.749β = 90
c = 79.148γ = 120
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
AutoPROCdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Human Genome Research InstituteUnited StatesR01 CA168517
National Institutes of Health/National Human Genome Research InstituteUnited StatesR01 NS107479

Revision History  (Full details and data files)

  • Version 1.0: 2019-10-30
    Type: Initial release
  • Version 1.1: 2020-01-15
    Changes: Database references
  • Version 1.2: 2020-03-25
    Changes: Database references